I am currently using both and like both for different reasons. Flavor is definitely better with the Suorin Air, but the cartridges are more expensive. I do love the on/off switch and quick charge as well. QC seems to be an area they REALLY need to improve on, though. I stillprefer the Air, though.
The Rofvape Peas is really easy to use but has a much airier draw. Sometimes I'll put a finger over one of the side air holes if I need a stronger hit. Charging with a built in USB is awesome, and the pods are really really cheap and hold up longer than the Air in my experience. I haven't had any issues with burnt hits with this device. But flavor isn't quite as good by comparison. Other drawback is having to fill this one with a needle nose bottle, which they do provide in the kit (10ml). A little inconvenient if you use lots of flavors.